From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f194.google.com (mail-pg1-f194.google.com [209.85.215.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2508634D92C for ; Thu, 4 Jun 2026 15:37:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.194 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780587438; cv=none; b=H/4SerNfLtbC+h+CHaJYipsnv2NCSAa6eqLxWbSA/ora1qaTEH9x7LNHOqCUrW2UCBXgoOXJGF/UaZ7dOBPUGu+nq6u2jtIpZJ4q6GcxL+kyg1TRPH5rcFKhky1ExCvaISknPwNvgZXfkgdkeeFc1jVAq2CkQgRDEM0EgNMSMt0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780587438; c=relaxed/simple; bh=nY6/njLe0UgFMoo9e4udwPdESJgHeK8pFOEaepKtfx8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jVDdnp+1b3fXLoyeYm5zl70OTzvnLQkYajjYGOaAu+OF+iPQd5WikJKh2r8tKnj4GTGp0baxELPrVMRrf6i5oyimHGAxQ2J9P35+X0dkaWu6PosD5L5XjWlIdh4GXlZBxNx0eGYlu3U0o9u+lDMZOQrB06dp7iDenIVXRn3ywqI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Lo5XpSr7; arc=none smtp.client-ip=209.85.215.194 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Lo5XpSr7" Received: by mail-pg1-f194.google.com with SMTP id 41be03b00d2f7-c85a297d2d2so565456a12.0 for ; Thu, 04 Jun 2026 08:37:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1780587436; x=1781192236; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=nY6/njLe0UgFMoo9e4udwPdESJgHeK8pFOEaepKtfx8=; b=Lo5XpSr7DkvL5Up68ZMUVAf7yB1OGHrS8qFYMhCxWptn4A23IL+jcvOESR8vwrXoLZ xfZbN6gX/7BejqGNUoL93Bfj+lQSqdi5fxh/uWcN2n9LQ3/7Q9zzM7Yy7ZIzKe3rsskd ztDknvjq29YFb7z4dYaI+SbZMxRpaRzSnloHk/K1jFxyX1nxm44W8c9r15E3cgkpUMhq RluFKWV+q7OCoNGPuSaKEuNYc5IdKEaCwgqUva7nyFlJLTLsH7wR0NyS4lwtVbHgX0KN TGmHI/+x4x3t25Coje2x7Oz9uNeLxc7WRVhvvgdg4nWaXemUlTc59SUMuvDpL3npkNT9 psxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780587436; x=1781192236; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=nY6/njLe0UgFMoo9e4udwPdESJgHeK8pFOEaepKtfx8=; b=DmfEv5a15AeUqCvMyDqvVrvSsjDDq2P3qucUFjzkMZG3GW/xsntVx6KcG8/ggyTnvh Frs+DZXsH16osFqIy2MCjIv2M6CwFV75FdS3YVDjZrJhkZiipGZIE1sGEzxGc7ZjZlwp kR4CE/diERB28DzMrQMe4/H3F4IoF9k6US18PpthklWWX2m/YDjzfzrZxACoASP+9p76 gDNaY9JBw0rdfjwjmVi5XA5du4NtdraMPTgTu3fZn4NUjkCSK1hg2KdfNagRGTQIJcSy y+JYy2efYRHa0y8QUwxj/N7Vy3+gsEMe2y834xQxOTg/UAbgrEcEeVnep2X6x2KYKXtk zCfQ== X-Forwarded-Encrypted: i=1; AFNElJ+4DFQsQsZd9n3l7TLD2VYcG3jJE2TAYRWmk0L7fnm93Hyw8GNwdsOmagnHX9iARswvU1SmJzu2SQnFgkg=@vger.kernel.org X-Gm-Message-State: AOJu0YyrJ/x5UxL8p86saHStfdTYeiOKt2NyRqKi8ktrsES8hNXBLsec aiueLJZuiKZk7znjqCDhWi6gMPItqO/9MvI8YxQzxp4K3Xt8Svt112tR X-Gm-Gg: Acq92OHTCXxbrOj62P4MzYRO279CY512CfwHMQQw03QymR85iBmMX4uV0jhCvvOzaXi kKpcyQSuf/uPUK4e9NtSNwJgyK5ep9pNjardWfpMmdxUL1T69WBuM9O/rD3Uq3MFUw7cSzFEPBZ S1G89XaeLoSUyafwiMhtIGIMwIhTOsegx0VtoYG/f/v1GgV8e8pDdz93Q7QX5d/2TtQ5WrbB/PM ScCU8PA8Q96zTbOwCL5HEyskpGkaLTxakPdeLghmRmkvP9EnploXrnRjsLnzQzdRlDrr3cvR66g Amj1Fxv9t07Vf/ySA5Hq6EFkgdUKLJJiePlO6kF/RjtkYmQVTC9snbgXkHPii+Eqyg8txSn2JNI MZaY5p4uWZ2GbbBBwtoc4nKbLqDLdtcxXLYlKiqibBALUoxMEAb8NQVU8X8hhkeWJ19i/kjnEPq JMoiZVR0grDfbki4pTjLq4SGMO+sQLMPo= X-Received: by 2002:a05:6a20:d52a:b0:3a2:d838:bfdb with SMTP id adf61e73a8af0-3b49782ebdcmr9551112637.29.1780587436380; Thu, 04 Jun 2026 08:37:16 -0700 (PDT) Received: from laptop ([223.131.147.119]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c85df0b374fsm5526657a12.25.2026.06.04.08.37.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Jun 2026 08:37:15 -0700 (PDT) From: Woojin Ji To: Emil Tsalapatis Cc: bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Woojin Ji Subject: Re: [PATCH bpf-next] selftests/bpf: Add arena direct-value one-past-end reject test Date: Fri, 5 Jun 2026 00:37:10 +0900 Message-ID: <20260604153712.199362-1-random6.xyz@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: References: <20260603-arena-direct-value-v1-v1-1-7b31cc0a8cac@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Thanks for the review. I tried moving this into verifier_arena.c, but this test needs to set the second BPF_PSEUDO_MAP_VALUE ldimm64 immediate to arena_size exactly. The __arena C forms I checked materialize the arena-end offset as a separate ALU add or memory access offset instead, so they do not exercise arena_map_direct_value_addr() with off == arena_size. So v2 keeps the userspace raw-instruction test and expands the commit message to explain why it is needed. v2: https://lore.kernel.org/all/20260605-arena-direct-value-v1-v2-1-a92cb281e376@gmail.com/